Product Firefox Version 46.0.1 Build ID 20160502172042 Release Channel release OS OS X 10.11 OS Version 10.11.4 15E65 Signature: mmhk@0xd8e5 mmhk = unknown libsystem_kernel.dylib = ? Word for Mac libdyld.dylib = unknown libdispatch.dylib = ? Word for Mac libsystem_pthread.dylib = ? Word for Mac libobjc.A.dylib = ? Word for Mac libsystem_malloc.dylib = unknown Mac ? This is for Sumo's Related Bugs 1262787 NEW --- OS X startup crash in mmhk@0xd8e5 in Firefox 46 (with Premier Opinion malware) -------------- Malware is a possibility. Mac Malware Scanners https://discussions.apple.com/message/29938930#29938930 You can also try https://www.malwarebytes.org/antimalware/mac/index.html

I tried the second solution you suggested and it worked like a charm! Thank you very much!!!

Glad to help. Safe Surfing.